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Experimental and numerical study of surface roughness of thin brass wire processed by different dieless drawing processes

Materials, ISSN: 1996-1944, Vol: 15, Issue: 1
2022
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Article Description

This paper examines the surface roughness of a thin brass wire (140–200 microns in diam-eter) after two dieless drawing (DD) processes, i.e., conventional dieless drawing (CDD) and incremental dieless drawing (IDD). In incremental dieless drawing, small increments in deformation were applied in several passes. It has been proven that the IDD process not only has a greater effi-ciency but also enables obtaining a wire with significantly lower surface roughness. The explanation for these effects is based on the results of the numerical modeling of both compared processes. The developed numerical model takes into consideration the initial roughness of the wire surface, shape and dimensions of grains, and their diversified mechanical properties. Nanoindentation measure-ments, microstructure, and plastometric studies allowed us to find the effective flow stress distribution in the grains. The IDD process was found to be much more stable and develop a much more uniform distribution of grain strain than the CDD process. More homogeneous deformation results in surface roughness reduction. Approximately 25–30% reduction in surface roughness of the wire produced by the IDD process was predicted by simulations and confirmed experimentally.

Bibliographic Details

Milenin, Andrij; Wróbel, Mirosław; Kustra, Piotr; Němeček, Jiří

MDPI AG

Materials Science; Physics and Astronomy

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